Index-tab for books



(No Model.)

G. ANKELBN. INDEX TAB FOB, BOOKS, &c.

No.- 274,248. Patented lVIaLZO, 1883.

Fig. 5.

n. versus, PhamLyrmmphww-mlmm ma UNITED STATES PATENT OFFICE.

GUSTAV ANKELEN, OF ST. LOUIS, MISSOURI.

"INDEX-TAB FOR BOOKS, abe.

' SPECIFICATION forming part of Letters Pate-nt No. 274,248, dated March20, 1883.

Application filed December 1, 1882. (No model.)

T o all whom 'it may/concern:

Be it known that I, GUSTAV ANKELEN,

subject of the Emperor of Germany, having declared his intention ofbecoming a citizen of the United States, residing at St. Louis, andState ot' Missouri, have invented anew and useful Index-Tab for Books,&c., of which the following is a specification.

This invention relates to improved manner and means to `provide "analphabetical index or leather tabs for the fore edge of books, foldedsheets, and similar purposes.

The essential objects ot' my invention are to achieve greater strength,durability, and neatness, both on part the leather tab or index ,iproper, and its attachment to the edge of the `edges or flaps atea',

paper, sheet, book, &c., also torender the, said parts more imperviousand capable of resisting the effects of handling, and otherwise toimprove the fore edge of books, Sec., to which myimprovementsareapplied. Iachieve `the said objects by the mechanism illustrated in theaccompanying drawings, in which- `Figure l represents in perspective abook havingmy improved index-tab applied thereto. Fig. 2 is an enlargedperspective view of the index-tab' as it appears ready to be applied.Fig. 3 isa transverse section of Fig. 2. Fig. 4 is a transverse sectionof the index .tab as it appears when applied or attached to the fore 1edge of a leaf, sheet, or book. Fig. 5 repre` sents in detailperspective views the respective patterns or cuts of all the parts thatcom pose my improved index-tab.

Similarletters refer to similar parts throughont the several views.

A represents the well-known leather tab upon which the alphabeticalletters are impressed, printed, &c. As usual, the said leather tabconsists of two folds, and each of these I shape to present thehook-shaped projecting s as shown in Figs. 2, 3, 4,5.

B represents the pasteboard, cloth, or lilling that is placed inside thefolds ofthe leather tab A,in order to give same thickness, strength, andbody.

C represents the bottom layer or fold, consisting preferably of arectangular piece of linen cloth eut and folded, asshoWn-that is to say,this piece of linen is doubled together to present the folds marked c cc2, as shown in Figs. 2, 3, 4, 5. ner faces ofthe folds c c glue oradhesive coating is applied in order to attach the linen fold C to thefore edge. Hence this fore edge, X, ofthe book, Ste., comes between thefolds c c', and up against or in contact with the edge c2 ofthe linenfold O, as indicated in Figs. 4:` The fore edge, X, is thus strengthenedby the addition of this bottom linen fold, C, and the latter serves asthe means or surfaces against which the leather tab A is attached ormade to adhere. For this purpose the leather tab A has its hook-shapededge or` faces a a only pasted, glued, or attached near to theiedge c2ofthe linen fold C, as shown in dotted lines in Fig. 2. In practice, Iplace lthe filling77 B first between the leather folds ofthe tab A, andthen spread the hook-shaped folds d a to come over the edge of C, asindicated, and press the parts together to cause the adhesion to takeplace, thus leaving only the index or leather tab to'project beyond thefore edge in manner usual. The linen fold O, and attached thereto itsleather tab A, I furtherjoin iirmly together by a third layer or outerfold of linen, (marked D.) This piece is made and folded in the shapeshown in Fig. 5, seas to. have the folds d d and edge at d2. Further,this edge d2 is cut to have an opening or hole,` d3, ot' such size as tosimply permit the linen fold D to be slipped over the leather tab, andbring said fold Din parallel lines to lit snugly over the bottom fold,(l.` It is the adhering or attachment'of the outer linen fold, D, overthe hook-shaped edges a a of the leather tab that retains the lattermore firmly in ilsplace, and offers resistance to any act tending totear the leather tab or index away. The two linen folds (bottom, C, andouter one, 1),) come in line, top, or over each other and by glue orother adhesive matter are made to adhere togethcr, while the indextab A,by its projectand edge at ing edges a c', at'same time remain glued orfastened between thesaid two folds O and D. The combination to the foreedge of a book or the like, of the two layers ot' linen folds (l and D,and the leather tab or index having its edges c. a between saidlayersformsa'most strong, durable, and serviceable ii1dextab,77

Upon the in-A IOO and improved manner of firmly attachingsame Intestimony of said invention I have here- 1o to the proper placeindicated. unto set my hand.V

What I claim is- I As a new article of manufacture, the inflex- GUSTAVANKELEN. tab consisting of the tab A proper, having` edges a a, thebottom layer of linen, C, hav- 'Vitnesses: ing-folds c c', and edge c2,and the outerlayer of JOHN W. HERTHEL, linen, D, having folds d d', edged2, and open- WILLIAM W. HERTHEL.

ing d3, as and for the purposes set forth.

